Autogenous-welding apparatus



A. sAuLzE. AUTOGENOUS WELDING APPARATUS.

APPLICATION FILED SEPT-24, 1918- Patented Apr. 6, 1920.

2 SHEETS-SHEEI' I.

A. SAULZE.

'AuToGENous WELDING APPARATUS.

APPLICATION FILED sePT.`24, I9I8.

,Patented Apr. 6, 1920.

2 SHEETS-SHEET 2.

. for autogenous4 welding are burning UNTE f ATOINE SAULZE, OF LYON, FRANCE.

AUTOGENOUS-WLDING APPARATUS.

.Specification of Letters Patent.

Patented Apr. 6, 1920.

Application' filed September v24, 1918. Serial No. 255,478.

To all whom z't may concern.

Be it known that I, ANTOINE SAULZE, a citizen of the French Republic, of 53 Rue de la Charite, Lyon, France, have invented a certain new and useful Autogenous-Welding Apparatus, of which the following is a specilication.

This invention relates to an improved method'f 'controlling the supply of gases to, blow-pipes for autogenous welding and apparatus therefor.

It is knownA that the blow-pipes emplryed uring the whole working day although these pipes may not be in constant use. It therefore follows that the use of the oxygen and acetylene gases employed is greater than it should be practically.

The object of the invention is to effect a considerable economy of these gases b automatically stopping the admission of t e said gases when the blow-pipe is not in use, and again giving passage to these gases when the pipe is to resume work.

The principle of the invention consists in causing the rocking of a lever under the weight of the pipe when the latter is placed on one of the extremities of this lever, and in utilizing this rocking movement to eii'ect, through the displacement of the said lever, the closing of valves or cocks closing the gas passages. The removal of the pipe from its support allows the lever to return to its normal position of equilibrium and replaces the valves in their opening position.

The annexed drawing illustrates by way of example two practical forms of construction of the invention. The first is shown in elevation with parts in section in-Figure 1, and in lan by Fig. 2. The second construction is illustrated in Figs. 3 to 7. Fig. 3 is a view in front elevation:

Fig. 4 is a side view showing one of the pipes and its valve in section.

Fig. 5 is a similar section on a larger scale showing the extreme positions of the rocking lever. l

Fig. 6 is a plan view, and Fig. 7 shows in elevation the outer part of the box of one of the valves and the mounting of the rocking lever on the axle of the plug.

The first construction is composed of a base a of cylindrical shape hollowed out to form an inner chamber o, at the center of which 4is the oxygen admission get c which is fed by a pipe not illustrated tted the tube al which is screwed in at the entrance of the channel e. Opposite to this is the outlet channel f ending in a tube g which receives the pipe termination of the blowpipe. The chamberl b is closed by a cap provided with a central hole for receiving a ball which rests on an elastic membrane z' loccupying the lower surface of the cap and held in position by the screwing of the latter on the base.- This base is supporting the acetylene gas which is .similar to t at recelving the oxygen and to vwhichlare soldered the admission tubes all andi outlet tubes g1 of the acetylene. The admission port e1 is double and it leads to e on the provided with twd'cheeks j side opposite to the jet c1 into asmall reservoir 7c surmounted'by a small burner Z. The outlet e is provided with a leather flapvalve m which allows the outflow of the gas under pressure, but prevents its return from the reservoir k to the port e1.`

Between the cheeks j is a lever fn. rocking on an axle o passing through the said cheeks,

this lever is of a size, shape and weight so admission chamber Lof the calculated that it may be kept balanced bef.,-

tween the two ballsh and [1.1, without exert-v ing pressure on the said balls. The extremity nl of the said lever is hook-shaped in order to serve as support-to the blow-pi e.

The working is as follows: When t e blowpipe is working, the apparatus is in the position illustrated, the respective lburners ofthe oxygen and acetylene gases are open, and assure the feed of the blowpipe. When the operator no longer requires the latter he puts it on the Working table, taking care to rest its end on the support nl formed by the lever a. Under the Weight of this blowpipe the saidlever rocks around its axle e, lts,

lateral sides then simultaneously exert. pressure on the balls It, h1, and push them against the membranes z, 1, which they involve in their movement and which are apinlets. Y l

However, a small uantity of acetylene gas continues to pass t rough the port e to feed burner Z alight.

.When the operator has to again use the blowpipe, he removes it from its su port, the lever n being lightened immediate y resumes its position of equilibrium; on the plied against the end of the burners c and c1, therefore instantaneously stopping the gas the reservoir lc and keep the small the inclined other hand, the membranes pushbaek the' of assured working.

balls owing to their elasticity. The burners c and 01 beingI no longer stopped, can then again supply the gases required to kee the blowpipe 1n the 1i hted state. The lig ting of the latter is e ected by simply submitting it to the flame of the small burner Z.

The second device shown in Figs. 3 to 7 is composed of a base formed of a horizontal plate intended to bev ixed on a-ny frame or support and comprising centrally a frame 79 formed by a plate cut so as to form two branches, at the top of each of which is fixed or cast a hollow member lr provided with two diametrically oppositeY tubes, to which are fitted the rubber pipes coming on the one hand from the respective reservoirs and passing on the other hand to the blowpipe. The oxygen passes into the tubes d and the ,acetylene into the tubes (Z1, in k the direction shown by the arrows. The back tube Z1 includes' in parallel a pipeof slight diameter ending in any burner Z forming a by pass.

The plugs s' are mounted -as-usual in their 'box and symmetrically arranged one in a line' with theother, but without their ends touching each other. These4 ends t, which project from the fixing nut, carry two washers as shown in Fig. 7 These washers allow the lever n to grip both plugs at lonce through a slot a provided in the lever at a given place on its length. When the said lever is inplace on the plugs, a peg y is inserted below the -levern so as to close the lower end of the slot z and confine therein the ends t of the plugs. The lever cannot then be raised, but it can rock to. the'one side or the other under the iniiuence of the balance-weight n2 fixed at one of its ends, or by the weight of the blowpipe when the latter is placed between the branches nl.

The working is very simple. When the two plugs are in the position shown in Fig. 3 and bring the two tubes in extension into communication, the blowpipe is in use and the lever n. is in the horizontal position under the infiuence of the balance-weight n2, which' lcauses this lever to be applied on the support u, as shown in dotted lines in Fig. 7 The welding being terminated, the blowpipe is placed on the fork nl, and its weight causes the rocking of the lever which takes osition shown in 'full lines Fig. 5. ln tlns rocking movement, the lever has caused the two plugs s to perform a part of a revolution broadly sufficient for stop ping of the passage ofthe acetylene and oxygen gases. When the operator resumes the blowpipe, the balance weight 'n2 causes the lever to rock inthe reverse direction, and automatically restablishes the connnunieation.

Wmais device is of simple and strong constopping members,

struction, easily mounted and regulated, and

The cocks might be arranged so as to einploy a single plug. r, v p

The rocking -under the'weightof the blowpipe can be obtained in different ways and the stopping can be obtained by any known without departing from the principle of the invention, whlch re- 'sides in the automatic opening a-nd closing of the passages for-the oxygen and acetylene gases by the weight of the blowpipe in order to cause either the rocking of a lever or similar member, or the rotation of Aany part effecting` the opening or the automatic and simultaneous closing of any means stop- .'ping the passage for the gases.

What I claim as my invention and desire to secure byLetters Patent of the United States is 4 l 1. An autogenous welding apparatus of the character described comprising a support, a tube for conveying oxygen gas, and a tube for conveying acetylenegas, and mounted on said support... a valve in each of said tubes, a balanced lever mounted on said support, means Aactuated by said lever whereby when the lever yis depressed the said valves are operated to prevent gthe passage of the gases through said tubes, and when released, the valves are operated to allow the gases to pass, a by pass burner,'and means allowing the gas to constantly pass to said by pass burner.

2. An .autogenous wel the character described comprising a base containing a chamber, means 'for conveying oxygen gas to said chamber, an outlet pipe 4from said chamber, a .cover comprising acentral orifice closing said chamber` an elastic membrane under said cover, a ball in said orifice, cheeks mounted on said base. an acetylene chamber supported by said cheeks and having an orifice in its base, a. ball inz said orifice, a membrane stretched across the upper end of said orifice, a valve `body in said acetylenechamber, means for GASTON YEAUNAUX, GRADE CORBETT.

ing apparatus of 

